The Rough Guide: Dominican Republic reports:
"..for quality jewellery is Harrison's, a high-end Dominican jewellery with outlets all over the country; you'll find an array of beautiful craftsmanship at these stores for half this price the same price would cost back home." 

Ulysses Travel Guide: Dominican Republic recommends:
"if your pocketbook permits, then head to HARRISON'S where you're bound to find some beautiful gold pieces..." 

The Dominican Republic Handbook
Published by Moon Travel Handbook calls HARRISON'S Fine Caribbean Jewelers: The big-daddy jewelry store..."

Explore the Dominican Republic
Published by Pariser's Discovery Guides calls HARRISON'S Fine Caribbean Jewelers: The nation's foremost jeweler..."

Frommer's 2009 Caribbean says
HARRISON'S Fine Caribbean Jewelers is the "....Dominican Republic's premier jewelers.... established in 1980 by Robert Harrison, the shop specializes in platinum, working it into configurations in which gemstones (usually diamonds or the local larimar) which slide, pivot or twist in unique ways. Most objects range from $275 to $1200. Madonna, Michael Jackson, Keith Richards of the Rolling Stones and actor Patrick Swayze have all donned Harrison's Jewelry."